CN108762681A - A kind of solid state disk and its reading/writing method and device - Google Patents
A kind of solid state disk and its reading/writing method and device Download PDFInfo
- Publication number
- CN108762681A CN108762681A CN201810550750.4A CN201810550750A CN108762681A CN 108762681 A CN108762681 A CN 108762681A CN 201810550750 A CN201810550750 A CN 201810550750A CN 108762681 A CN108762681 A CN 108762681A
- Authority
- CN
- China
- Prior art keywords
- read
- physical page
- page address
- mapping table
- write requests
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
- G06F3/0626—Reducing size or complexity of storage systems
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0638—Organizing or formatting or addressing of data
- G06F3/0644—Management of space entities, e.g. partitions, extents, pools
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
- G06F3/0671—In-line storage system
- G06F3/0673—Single storage device
Abstract
It includes multiple subregions that the application, which discloses a kind of solid state disk and its reading/writing method and device, solid state disk, and each subregion corresponds to a local mapping table.Local mapping table includes the mapping relations of logical block address and Local physical page address；Each subregion corresponds to a global starting physical page address, for obtaining global physical page address in conjunction with corresponding Local physical page address, so that Flash controllers are written and read operation.Global map table is divided into multiple local mapping tables, compares global map table, the byte number of the physical page address in local mapping table is less, and then reduces the ratio that L2P mapping tables occupy capacity, reduces the cost of solid state disk.
Description
Technical field
The present invention relates to technical field of memory, more specifically to a kind of solid state disk and its reading/writing method and device.
Background technology
The firmware (firmware) of solid state disk (SSD, Solid State Drive) safeguards one from LBA (Logical
Block Address, logical block address) arrive PPA (Physical Page Address, physical page address) L2P (Logical
To Physical, logic to physics) mapping table, it is used as the address conversion of read-write operation.With the arrival of data age, big number
More stringent requirements are proposed for capacity and performance according to, cloud service etc. to solid state disk.In order to which performance and time delay consider, L2P mappings
Table uses the page mapping mode of 4KB units, and with the increase of solid state disk capacity, L2P mapping tables occupy capacity ratio and also can
Increase, and then DDR (Double Data Rate, Double Data Rate) memory increases, and increases the cost of solid state disk.Such as：2TB
Solid state disk, each PPA sizes in L2P mapping tables are 4 bytes (byte), one of bit expressions doing reading or
Person writes, and in addition 31bits indicates corresponding physical address；The solid state disk of user capacity 8TB (naked capacity 10TB), then L2P mappings
Each PPA sizes in table are 8 bytes, and one of bit expressions are being read or write, and in addition 63bits is indicated corresponding
Physical address.
Invention content
In view of this, a kind of solid state disk of present invention proposition and its reading/writing method and device, L2P mapping tables to be reduced occupy
Capacity ratio, to realize the purpose for reducing solid state disk cost.
To achieve the goals above, it is proposed that scheme it is as follows：
A kind of solid state disk, including multiple subregions, each subregion correspond to a local mapping table, the part mapping
Table includes the mapping relations of logical block address and Local physical page address；
Each subregion corresponds to a global starting physical page address, for being obtained in conjunction with corresponding Local physical page address
To global physical page address, so that Flash controllers are written and read operation.
A kind of reading/writing method of solid state disk, including：
The read-write requests that receiving host is sent, the read-write requests include partition data and logical block address；
According to the correspondence of partition data and local mapping table, matching obtains the number of partitions for including with the read-write requests
According to corresponding local mapping table, local mapping table includes the mapping relations of logical block address and physical page address；
The local mapping table obtained according to matching and the read-write requests, analysis obtain patrolling with what the read-write requests included
Collect the corresponding physical page address of block address；
Include in conjunction with the corresponding physical page address of logical block address and the read-write requests that the read-write requests include
The corresponding global starting physical page address of partition data, obtains global physical page address；
Read-write operation is completed according to the global physical page address, and feeds back read-write operation and completes information to the host.
Optionally, the local mapping table obtained according to matching, analysis obtain the logic for including with the read-write requests
Block address corresponds to physical page address, specifically includes：
If the read-write requests are write requests, one is obtained from the local mapping table that matching obtains, and there is no mapping passes
The physical page address of system；
It establishes the mapping relations of the physical page address of logical block address and acquisition that the read-write requests include and is stored in extremely
Match obtained local mapping table；
If the read-write requests are read requests, according to the local mapping table that matching obtains, matching obtains and the read-write
The corresponding physical page address of logical block address that request includes.
A kind of read-write equipment of solid state disk, including：
Receiving unit, for the read-write requests that receiving host is sent, the read-write requests include partition data and logical block
Address；
Matching unit, for the correspondence according to partition data and local mapping table, matching obtains asking with the read-write
It includes the mapping pass of logical block address and physical page address to ask the corresponding local mapping table of the partition data for including, local mapping table
System；
Analytic unit, the local mapping table for being obtained according to matching and the read-write requests, analysis obtain and the reading
The corresponding physical page address of logical block address that write request includes；
Assembled unit, the corresponding physical page address of logical block address for including in conjunction with the read-write requests and the reading
The corresponding global starting physical page address of partition data that write request includes, obtains global physical page address；
Feedback unit is read and write, for completing read-write operation according to the global physical page address, and it is complete to feed back read-write operation
At information to the host.
Optionally, the analytic unit, specifically includes：
Subelement is obtained, if being write request for the read-write requests, is obtained from the local mapping table that matching obtains
One physical page address that mapping relations are not present；
Relationship establishes subelement, the physical page address for establishing logical block address and acquisition that the read-write requests include
Mapping relations and be stored in the obtained local mapping table of matching；
Coupling subelement, if being read request for the read-write requests, according to the local mapping table that matching obtains, matching
Obtain physical page address corresponding with the logical block address that the read-write requests include.
Compared with prior art, technical scheme of the present invention has the following advantages：
A kind of solid state disk of above-mentioned technical proposal offer and its reading/writing method and device, solid state disk include multiple subregions,
Each subregion corresponds to a local mapping table part.Mapping table includes that logical block address and the mapping of Local physical page address are closed
System；Each subregion corresponds to a global starting physical page address, for obtaining global object in conjunction with corresponding Local physical page address
Page address is managed, so that Flash controllers are written and read operation.Global map table is divided into multiple local mapping tables, compared to complete
Office's mapping table, the byte number of the physical page address in local mapping table is less, and then reduces the ratio that L2P mapping tables occupy capacity
Example, reduces the cost of solid state disk.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of schematic diagram of solid state disk provided in an embodiment of the present invention；
Fig. 2 is a kind of flow chart of the reading/writing method of solid state disk provided in an embodiment of the present invention；
Fig. 3 is a kind of building-block of logic of the read-write equipment of solid state disk provided in an embodiment of the present invention.
Specific implementation mode
In the prior art, one L2P mapping table of the firmware maintenance of solid state disk；Core of the invention thinking is that maintenance is multiple
Local mapping table, each part mapping table correspond to one subregion of solid state disk, in this way by by multiple part mapping tables, to use
Do the address conversion of read-write operation.Such as：For the solid state disk of user capacity 8TB, solid state disk can be bisected into 4 points
Area, each PPA in the corresponding local mapping table of each in this way subregion only need 4 bytes that can complete the appearance of addressing 8TB
Amount compares existing way, saves DDR memories, reduce the cost of solid state disk.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
It is shown in Figure 1 the present embodiment provides a kind of solid state disk, including the first subregion Q1, the second subregion Q2, third point
Area Q3 and the 4th subregion Q4.First subregion Q1 corresponds to local mapping table P1；Second subregion Q2 corresponds to local mapping table P2；Third point
Area Q3 corresponds to local mapping table P3；4th subregion Q4 corresponds to local mapping table P4.Local mapping table includes logical block address and office
The mapping relations of portion's physical page address.Local physical page address in each part mapping table for pair with the part mapping table pair
The subregion answered is addressed；For example, the Local physical page address in local mapping table P1 can be used for carrying out the first subregion Q1
Addressing.
First subregion Q1 corresponds to the first global starting physical page address PPA1；Second subregion Q2 corresponds to the second global starting material
Manage page address PPA2；Third subregion Q3 corresponds to third overall situation starting physical page address PPA3；It is global that 4th subregion Q4 corresponds to the 4th
Originate physical page address PPA4.Local physical page address in the corresponding global starting physical page address of subregion and local mapping table
Combine, you can obtain global physical page address, Flash controllers are written and read operation according to global physical page address.Example
Such as, host sends the read request comprising partition data and logical block address to the LBA distribution modules of solid state disk, and LBA is according to dividing
Area's Data Matching is to corresponding local mapping table, then matches to obtain Local physical page address corresponding with logical block address, then
Local physical page address is added to obtain global physical page address with corresponding global starting physical page address.
In the case where the capacity of solid state disk is certain, global map table is divided into multiple local mapping tables, compared to complete
Office's mapping table, the byte number of the physical page address in local mapping table is less, in other words, by the way that global mapping table to be divided into
Multiple part mapping tables expand addressing range, and then reduce under the premise of not increasing the byte number of physical page address
L2P mapping tables occupy the ratio of capacity, reduce the cost of solid state disk.
The present embodiment provides a kind of reading/writing methods of solid state disk, and shown in Figure 2, the method comprising the steps of：
S11：The read-write requests that receiving host is sent, the read-write requests include partition data and logical block address.
When solid state disk is read or write when host in the present embodiment, LBA can be sent to solid state disk.It takes
Bit0~bitN of LBA is as partition number, i.e., the partition data that read-write requests include, and 2N=M, M are subregion number；Such as 4
Subregion, then using bit0~bit1 as partition number, 8 subregions, then using bit0~bit2 as partition number.In LBA except bit0~
Bit other than bitN is LBA ', i.e. logical block address；LBA is moved to right N, you can obtain LBA '.
S12：According to the correspondence of partition data and local mapping table, matching obtains point for including with the read-write requests
The corresponding local mapping table of area's data, local mapping table includes the mapping relations of logical block address and physical page address.
Solid state disk includes multiple subregions, and each subregion corresponds to a local mapping table.Specifically, pre-setting each office
The correspondence of portion's mapping table and partition number.For solid state disk shown in FIG. 1, each part mapping table is corresponding with partition number
Relationship see the table below shown.
| Partition number | Local mapping table |
| 00 | P1 |
| 01 | P2 |
| 10 | P3 |
| 11 | P4 |
According to the correspondence of partition data and local mapping table, you can match the subregion for obtaining and including in read-write requests
The corresponding local mapping table of data.Local physical page address in each part mapping table is for pair corresponding with the part mapping table
Subregion be addressed.
S13：According to the obtained local mapping table of matching and the read-write requests, analysis obtain include with the read-write requests
The corresponding physical page address of logical block address.
Host notifies solid state disk by standard message (NVMe), and current read-write requests are read request also write requests.
If current read-write requests are write requests, there is no mappings for acquisition one from the local mapping table that matching obtains
The physical page address of relationship；Then the mapping of the physical page address of logical block address and acquisition that the read-write requests include is established
Relationship is simultaneously stored in the local mapping table obtained to matching.
The physical page address of mapping relations will not be set up in the present embodiment there is also in local mapping table, it in this way can be straight
Connect the physical page address that an idle state (not setting up mapping relations) is obtained from local mapping table.Mapping can also be passed through
The physical page address of table management module records idle state.It should be noted that when the not physical page address of idle state,
It can be to garbage reclamation module application physical page address.
If current read-write requests are read requests, according to the local mapping table that matching obtains, matching obtains and the reading
The corresponding physical page address of logical block address that write request includes.
S14：The corresponding physical page address of logical block address for including in conjunction with the read-write requests and the read-write requests packet
The corresponding global starting physical page address of partition data contained, obtains global physical page address.
I.e. global physical page address=overall situation originates physical page address+physical page address.
S15：Read-write operation is completed according to the global physical page address, and feeds back read-write operation and completes information to the master
Machine.
Flash controllers in solid state disk determine some physics Flash particles to phase according to global physical page address
The Physical Page answered is written and read operation.After completing read-write operation, notice host read-write operation is completed.Read-write operation is read operation
Or write operation.
For each method embodiment above-mentioned, for simple description, therefore it is all expressed as a series of combination of actions, but
Be those skilled in the art should understand that, the present invention is not limited by the described action sequence because according to the present invention, certain
A little steps can be performed in other orders or simultaneously.
Following is apparatus of the present invention embodiment, can be used for executing the method for the present invention embodiment.For apparatus of the present invention reality
Undisclosed details in example is applied, the method for the present invention embodiment is please referred to.
It is shown in Figure 3 the present embodiment provides a kind of read-write equipment of solid state disk, the device include receiving unit 11,
Matching unit 12, analytic unit 13, assembled unit 14 and read-write feedback unit 15：
Receiving unit 11, for the read-write requests that receiving host is sent, the read-write requests include partition data and logic
Block address；
Matching unit 12, for the correspondence according to partition data and local mapping table, matching obtains and the read-write
The corresponding local mapping table of partition data that request includes, local mapping table includes the mapping of logical block address and physical page address
Relationship；
Analytic unit 13, for according to the obtained local mapping table of matching and the read-write requests, analysis obtain with it is described
The corresponding physical page address of logical block address that read-write requests include.Specifically, analytic unit 13 includes obtaining subelement, relationship
Establish subelement and coupling subelement.
Subelement is obtained, if being write request for the read-write requests, is obtained from the local mapping table that matching obtains
One physical page address that mapping relations are not present；
Relationship establishes subelement, the physical page address for establishing logical block address and acquisition that the read-write requests include
Mapping relations and be stored in the obtained local mapping table of matching；
Coupling subelement, if being read request for the read-write requests, according to the local mapping table that matching obtains, matching
Obtain physical page address corresponding with the logical block address that the read-write requests include
Assembled unit 14, the corresponding physical page address of logical block address for including in conjunction with the read-write requests and described
The corresponding global starting physical page address of partition data that read-write requests include, obtains global physical page address；
Feedback unit 15 is read and write, for completing read-write operation according to the global physical page address, and feeds back read-write operation
Information is completed to the host.
The apparatus embodiments described above are merely exemplary, wherein the unit illustrated as separating component can
It is physically separated with being or may not be.Some or all of module therein can be selected according to the actual needs
It achieves the purpose of the solution of this embodiment.Those of ordinary skill in the art are without creative efforts, you can with reason
It solves and implements.
Herein, relational terms such as first and second and the like be used merely to by an entity or operation with it is another
One entity or operation distinguish, and without necessarily requiring or implying between these entities or operation, there are any this reality
Relationship or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to the packet of nonexcludability
Contain, so that the process, method, article or equipment including a series of elements includes not only those elements, but also includes
Other elements that are not explicitly listed, or further include for elements inherent to such a process, method, article, or device.
In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including the element
Process, method, article or equipment in there is also other identical elements.
Each embodiment is described by the way of progressive in this specification, the highlights of each of the examples are with other
The difference of embodiment, just to refer each other for identical similar portion between each embodiment.
To the above description of disclosed embodiment of this invention, so that professional and technical personnel in the field is realized or use this
Invention.Various modifications to these embodiments will be apparent to those skilled in the art, institute herein
The General Principle of definition can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore,
The present invention is not intended to be limited to the embodiments shown herein, and is to fit to special with principles disclosed herein and novelty
The consistent widest range of point.
Claims (5)
1. a kind of solid state disk, which is characterized in that including multiple subregions, each subregion corresponds to a local mapping table, institute
State the mapping relations that local mapping table includes logical block address and Local physical page address；
Each subregion corresponds to a global starting physical page address, for being obtained entirely in conjunction with corresponding Local physical page address
Office's physical page address, so that Flash controllers are written and read operation.
2. a kind of reading/writing method of solid state disk, which is characterized in that including：
The read-write requests that receiving host is sent, the read-write requests include partition data and logical block address；
According to the correspondence of partition data and local mapping table, matching obtains the partition data pair for including with the read-write requests
The local mapping table answered, local mapping table include the mapping relations of logical block address and physical page address；
The local mapping table obtained according to matching and the read-write requests, analysis obtain the logical block for including with the read-write requests
The corresponding physical page address in address；
In conjunction with the corresponding physical page address of logical block address that the read-write requests include and subregion that the read-write requests include
The corresponding global starting physical page address of data, obtains global physical page address；
Read-write operation is completed according to the global physical page address, and feeds back read-write operation and completes information to the host.
3. according to the method described in claim 2, it is characterized in that, the local mapping table obtained according to matching, is analyzed
To the corresponding physical page address of the logical block address that includes with the read-write requests, specifically include：
If the read-write requests are write requests, there is no mapping relations for acquisition one from the local mapping table that matching obtains
Physical page address；
It establishes logical block address that the read-write requests include and the mapping relations of the physical page address of acquisition and is stored in matching
Obtained local mapping table；
If the read-write requests are read requests, according to the local mapping table that matching obtains, matching obtains and the read-write requests
Including the corresponding physical page address of logical block address.
4. a kind of read-write equipment of solid state disk, which is characterized in that including：
Receiving unit, for the read-write requests that receiving host is sent, the read-write requests include partition data and logical block address；
Matching unit, for the correspondence according to partition data and local mapping table, matching obtains and the read-write requests packet
The corresponding local mapping table of partition data contained, local mapping table includes the mapping relations of logical block address and physical page address；
Analytic unit, the local mapping table for being obtained according to matching and the read-write requests, analysis obtain asking with the read-write
Seek the corresponding physical page address of the logical block address for including；
Assembled unit, the corresponding physical page address of logical block address and the read-write for including in conjunction with the read-write requests are asked
The corresponding global starting physical page address of the partition data for including is sought, global physical page address is obtained；
Feedback unit is read and write, for completing read-write operation according to the global physical page address, and read-write operation is fed back and completes letter
It ceases to the host.
5. device according to claim 4, which is characterized in that the analytic unit specifically includes：
Subelement is obtained, if being write request for the read-write requests, one is obtained from the local mapping table that matching obtains
There is no the physical page address of mapping relations；
Relationship establishes subelement, and the physical page address for establishing logical block address and acquisition that the read-write requests include is reflected
It penetrates relationship and is stored in the local mapping table obtained to matching；
Coupling subelement, if being read request for the read-write requests, according to the local mapping table that matching obtains, matching obtains
Physical page address corresponding with the logical block address that the read-write requests include.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810550750.4A CN108762681A (en) | 2018-05-31 | 2018-05-31 | A kind of solid state disk and its reading/writing method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810550750.4A CN108762681A (en) | 2018-05-31 | 2018-05-31 | A kind of solid state disk and its reading/writing method and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108762681A true CN108762681A (en) | 2018-11-06 |
Family
ID=64001562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810550750.4A Pending CN108762681A (en) | 2018-05-31 | 2018-05-31 | A kind of solid state disk and its reading/writing method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108762681A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110765140A (en) * | 2019-10-31 | 2020-02-07 | 江苏华存电子科技有限公司 | Mapping table dispersed storage method |
| CN112463055A (en) * | 2020-11-27 | 2021-03-09 | 苏州浪潮智能科技有限公司 | Method, system, equipment and medium for optimizing and using L2P table of solid state disk |
| CN115934002A (en) * | 2023-03-08 | 2023-04-07 | 阿里巴巴（中国）有限公司 | Solid state disk access method, solid state disk, storage system and cloud server |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102915212A (en) * | 2012-09-19 | 2013-02-06 | 记忆科技(深圳)有限公司 | RAID (redundant arrays of inexpensive disks) realization method of solid state disks, solid state disk and electronic equipment |
| CN103020550A (en) * | 2012-12-03 | 2013-04-03 | 记忆科技(深圳)有限公司 | Solid state disk and secure access method thereof as well as solid state disk system |
| CN103440206A (en) * | 2013-07-25 | 2013-12-11 | 记忆科技(深圳)有限公司 | Solid state hard disk and mixed mapping method of solid state hard disk |
| CN103853664A (en) * | 2012-11-28 | 2014-06-11 | 联想(北京)有限公司 | Method and electronic device for achieving multiple operating systems |
| US20170185335A1 (en) * | 2015-12-23 | 2017-06-29 | Ocz Storage Solutions, Inc. | Power loss protection for solid state drives |
-
2018
- 2018-05-31 CN CN201810550750.4A patent/CN108762681A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102915212A (en) * | 2012-09-19 | 2013-02-06 | 记忆科技(深圳)有限公司 | RAID (redundant arrays of inexpensive disks) realization method of solid state disks, solid state disk and electronic equipment |
| CN103853664A (en) * | 2012-11-28 | 2014-06-11 | 联想(北京)有限公司 | Method and electronic device for achieving multiple operating systems |
| CN103020550A (en) * | 2012-12-03 | 2013-04-03 | 记忆科技(深圳)有限公司 | Solid state disk and secure access method thereof as well as solid state disk system |
| CN103440206A (en) * | 2013-07-25 | 2013-12-11 | 记忆科技(深圳)有限公司 | Solid state hard disk and mixed mapping method of solid state hard disk |
| US20170185335A1 (en) * | 2015-12-23 | 2017-06-29 | Ocz Storage Solutions, Inc. | Power loss protection for solid state drives |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110765140A (en) * | 2019-10-31 | 2020-02-07 | 江苏华存电子科技有限公司 | Mapping table dispersed storage method |
| WO2021082111A1 (en) * | 2019-10-31 | 2021-05-06 | 江苏华存电子科技有限公司 | Mapping table distributed storage method |
| CN112463055A (en) * | 2020-11-27 | 2021-03-09 | 苏州浪潮智能科技有限公司 | Method, system, equipment and medium for optimizing and using L2P table of solid state disk |
| CN112463055B (en) * | 2020-11-27 | 2023-01-06 | 苏州浪潮智能科技有限公司 | Method, system, equipment and medium for optimizing and using L2P table of solid state disk |
| CN115934002A (en) * | 2023-03-08 | 2023-04-07 | 阿里巴巴（中国）有限公司 | Solid state disk access method, solid state disk, storage system and cloud server |
| CN115934002B (en) * | 2023-03-08 | 2023-08-04 | 阿里巴巴（中国）有限公司 | Solid state disk access method, solid state disk, storage system and cloud server |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11500780B2 (en) | Recovery of validity data for a data storage system | |
| US10282286B2 (en) | Address mapping using a data unit type that is variable | |
| US8386744B2 (en) | Thin provisioning migration and scrubbing | |
| CN106708425A (en) | Distributed multimode storage management | |
| CN102830942A (en) | Method for mapping disk array of solid hard disk and solid hard disk | |
| CN108762681A (en) | A kind of solid state disk and its reading/writing method and device | |
| US11416162B2 (en) | Garbage collection method and storage device | |
| KR20180045786A (en) | Method of consolidating data streams for multi-stream enabled solid state drives | |
| CN104536904A (en) | Data management method, equipment and system | |
| US20210240584A1 (en) | Data recovery method, system, and apparatus in storage system | |
| CN103995855A (en) | Method and device for storing data | |
| CN108399050B (en) | Data processing method and device | |
| WO2018024214A1 (en) | Io flow adjustment method and device | |
| CN103150402A (en) | Index-code-based virtual file system, establishment method and access method | |
| CN108255742A (en) | A kind of large capacity solid state disk mapping method | |
| CN110554833B (en) | Parallel processing IO commands in a memory device | |
| US20170039140A1 (en) | Network storage device for use in flash memory and processing method therefor | |
| CN103309619A (en) | NAND Flash memory data storage method | |
| CN111782135A (en) | Data storage method, system, data node and computer readable storage medium | |
| CN107608624A (en) | A kind of method for lifting solid state hard disc performance | |
| CN102867046B (en) | Database optimizing method based on solid state hard disc and system | |
| CN101630332A (en) | Data storage management method, data storage management device and data storage management system | |
| CN101667458B (en) | Method for erasing solid state disk wholly and equipment thereof | |
| CN113918087A (en) | Storage device and method for managing namespace in storage device | |
| CN112181274B (en) | Large block organization method for improving performance stability of storage device and storage device thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181106 |